College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 9, Problem 7TP
To determine
(a)
The amount of force the bridge will provide to the left and right piers.
To determine
(b)
The change in the forces on left and right piers as the car moves to the right side of the bridge.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A bridge of length 21 m and mass 30000 kg
is supported at each end. A truck of mass
20000 kg is located 15 m from the left end.
A
B
15 m
- 21 m
What is the force on the bridge at the left
point of support? The acceleration of gravity
is 9.8 m/s?.
A 5-m-long simply supported timber beam carries two concentrated loads as shown. If L = 6 kN and M = 54 kN, determine the
magnitude of the vertical force acting at support D.
y
2 m
O 42.9 KN
O 63.4 kN
45.6 KN
O 53.5 kN
O 33.6 KN
L
B
2 m
M
a
1 m
0.5 m
D
X
Due to a jaw injury, a patient must wear a strap (see the figure) that produces a net upward force of 5.00 N on his chin. The tension is the same throughout the strap.
Chapter 9 Solutions
College Physics
Ch. 9 - What can you say about the velocity of a moving...Ch. 9 - Under what conditions can a rotating body be in...Ch. 9 - What three factors affect the torque created by a...Ch. 9 - A wrecking ball is being used to knock down a...Ch. 9 - Mechanics put a length of Pipe over the handle of...Ch. 9 - Prob. 6CQCh. 9 - Explain the need for tall towers on a suspension...Ch. 9 - When visiting some countries, you may see a person...Ch. 9 - Prob. 9CQCh. 9 - Prob. 10CQ
Ch. 9 - Why are the forces exerted on the outside world by...Ch. 9 - Explain why the forces in our joints are several...Ch. 9 - Why are the forces exerted on the outside world by...Ch. 9 - Explain why the forces in our joints are several...Ch. 9 - Certain of dinosaurs were bipedal (walked on two...Ch. 9 - Swimmers and athletes during competition need to...Ch. 9 - If the maximum force the biceps muscle can exert...Ch. 9 - Suppose the biceps muscle was attached through...Ch. 9 - Explain one of the reasons why pregnant women...Ch. 9 - (a) When opening a door, you push on it...Ch. 9 - When tightening a bolt, you push perpendicularly...Ch. 9 - Two children push on opposite sides of a door...Ch. 9 - Use the second condition for equilibrium (net =0 )...Ch. 9 - Repeat the seesaw problem in Example 9.1 with the...Ch. 9 - Prob. 6PECh. 9 - Two children of mass 20.0 kg and 30.0 kg sit...Ch. 9 - Prob. 8PECh. 9 - A person carries a plank of wood 2.00 m long with...Ch. 9 - Prob. 10PECh. 9 - Prob. 11PECh. 9 - Prob. 12PECh. 9 - Prob. 13PECh. 9 - Prob. 14PECh. 9 - Prob. 15PECh. 9 - Prob. 16PECh. 9 - To get up on the roof, a person (mass 70.0 kg)...Ch. 9 - Prob. 18PECh. 9 - Prob. 19PECh. 9 - Suppose you needed to raise a 250-kg mower a...Ch. 9 - Prob. 21PECh. 9 - Prob. 22PECh. 9 - Prob. 23PECh. 9 - Prob. 24PECh. 9 - Prob. 25PECh. 9 - Prob. 26PECh. 9 - Prob. 27PECh. 9 - Prob. 28PECh. 9 - Prob. 29PECh. 9 - Prob. 30PECh. 9 - Prob. 31PECh. 9 - Prob. 32PECh. 9 - Prob. 33PECh. 9 - Prob. 34PECh. 9 - Prob. 35PECh. 9 - Integrated Concepts Suppose we replace the 4.0-kg...Ch. 9 - Prob. 37PECh. 9 - You have just planted a sturdy 2-m-tall palm tree...Ch. 9 - Unreasonable Results Suppose two children are...Ch. 9 - Construct Your Own Problem Consider a method for...Ch. 9 - Prob. 1TPCh. 9 - Prob. 2TPCh. 9 - Prob. 3TPCh. 9 - Prob. 4TPCh. 9 - Prob. 5TPCh. 9 - Prob. 6TPCh. 9 - Prob. 7TPCh. 9 - Prob. 8TPCh. 9 - Prob. 9TPCh. 9 - Prob. 10TPCh. 9 - Prob. 11TP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 192 N and is 3.1 m long. What is the tension in each rope when the 710–N worker stands 1.06 m from one end? Smaller tension? Larger tension?arrow_forwardThe slope of the 4.1 kN force F is specified as shown in the figure. Express F as a vector in terms of the unit vectors i and j. Assume a = 9, b = 3. Answer: F = (i it i j) KNarrow_forwardThe drawing below shows a person whose weight is W = 552 N doing push-ups. Assume L1 = 0.871 m and L2 = 0.391 m. Calculate the normal force exerted by the floor on each hand, assuming that the person holds this position.arrow_forward
- The figure shows a person whose weight is W = 782 N doing push-ups. Find the normal force exerted by the floor on (a) each hand and (b) each foot, assuming that the person holds this position.arrow_forwardThe 6-m pole ABC is acted upon by a force P as shown. The pole is held by a ball-and-socket joint at A and by two cables BD and BE. If the tension in cable BE is 252 N and if a = 3m, determine the magnitude of force P(N). Round off only on the final answer expressed in 3 decimal places.arrow_forwardFive forces are acting on the cantilever beam AB. Find the resultant or a couple acting on the cantilever beam. 1400 N 1000N 800 N 500. N 900 N A 1.2 m 0.6m 0.9 m 1.5 m 0.6marrow_forward
- A 300 N girl and a 400 N boy stand on a 16-m platform supported by posts A and B as shown, The platform itself weighs 200 N. What are the forces exerted by the supports on the platform? Draw a free body diagram.arrow_forwardA window washer weighing 803.2 N is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 251.7 N and is 3.264 m long. What is the force in each rope when the window washer stands 1.45 m from one end? Force in Rope 1 (Rope closest to the window washer.)= Submit Answer Tries 0/7 Force in Rope 2 (Rope farthest from the window washer.)= Submit Answer Tries 0/7arrow_forwardA bridge of length 50.0 m and mass 8.10 x 104 kg is supported on a smooth pier at each end as shown in the figure below. A truck of mass 2.90 x 104 kg is located 15.0 m from one end. What are the forces on the bridge at the points of support? AM. A, В 15.0 m 50.0 m normal force at point A normal force at point B N Need Help? Read It Master Itarrow_forward
- A professional athlete tears their Achilles tendon. There are two muscles in the back of the leg that pull upward on the Achilles tendon, as shown in the image below. (The Achilles tendon is the gray part above the heel) F₂ (250 N) F, (250 N) (a) Using information from the image above, what is the magnitude of the total force on the Achilles tendon? Number (b) What is the direction of the force on the Achilles tendon in the image? Up Down Left 20% 20° Rightarrow_forwardA 20 kg traffic light hangs midway on a cable between two poles 40 meters apart. If the sag in the cable is 0.40 meters, what is the tension in each side of the cable?arrow_forwardThe slope of the 7.9 kN force F is specified as shown in the figure. Express F as a vector in terms of the unit vectors i and j. Assume a = 11, b = 5. Answer: F = (i a b -x i+ MI j) kNarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
What is Torque? | Physics | Extraclass.com; Author: Extraclass Official;https://www.youtube.com/watch?v=zXxrAJld9mo;License: Standard YouTube License, CC-BY